There is no WSAEPERM; we were implying that there was.This fixes a
bug in e0c80315, which hadn't yet
appeared in any released Tor.

Thanks, Coverity!  (CID 1171414, 1171415, 1171416)

Per a comment from karsten, there is no longer v2 authority support,
so stop pretending there is. Also, fix a grammar error.x

This is a bugfix on 0.2.2.26-beta, because 6b83b3ba made directory
authorities remove themselves from the list of directory authorities to
upload to, but didn't suppress the warning in case they're the only
directory authority in the network.

(There is no longer meaningfully any such thing as a HS authority,
since we stopped uploading or downloading v0 hs descriptors in
0.2.2.1-alpha.)

Implements #10881, and part of #10841.

The conflicts here were tricky, and required me to eliminate the
command-queue as well.  That wasn't so hard.

Conflicts:
	src/or/or.h
	src/or/relay.c

It's now redundant with the inserted_time field in packed_cell_t

Fixes bug 10870.

It can happen because we sent something that got an ENETUNREACH
response.

Bugfix on 0.2.4.8-alpha; fixes a part of bug 10777.

Found by cypherpunks; fix for a part of bug 10777; bugfix on 0.1.0.1-rc.

Apparently fedora currently has ECDH but not P224. This isn't a huge
deal, since we no longer use OpenSSL's P224 ever (see #9780 and
72c1e5ac). But we shouldn't have segfaulting benchmarks really.

Fixes bug 10835; bugfix on 0.2.4.8-alpha.

This patch removes an "if (chan)" that occurred at a place where
chan was definitely non-NULL.  Having it there made some static
analysis tools conclude that we were up to shenanigans.

This resolves #9979.

(Based on a suggestion by arma at #9777)

Conflicts:
	src/or/circuitbuild.c

Right now this accounts for about 1% of circuits over all, but if you
pick a guard that's running 0.2.3, it will be about 6% of the circuits
running through that guard.

Making sure that every circuit has at least one ntor link means that
we're getting plausibly good forward secrecy on every circuit.

This implements ticket 9777,